Investment Securities - Narrative (Detail) (Debt securities, USD $) In Thousands, unless otherwise specified	Sep. 30, 2014 Investment	Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Number of securities with unrealized losses (in securities)	59
Aggregate depreciation percentage from amortized cost basis	2.10%
Fair value of securities with unrealized losses	$ 82,898	$ 58,828
Private mortgage originators
Schedule of Available-for-sale Securities [Line Items]
Number of securities with unrealized losses (in securities)	8
Amortized cost of securities with unrealized losses	358
Fair value of securities with unrealized losses	$ 353

This item represents the aggregate amortized cost of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

No definition available.

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- Definition

Gross unrealized loss as a percentage of amortized cost of available-for-sale securities.

+ References

No definition available.

+ Details

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- Definition

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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- Definition

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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